Are you frustrated that you cannot add comments into your configuration JSON
Relaxed JSON is a simple solution.
Small JavaScript library with only one exposed function RJSON.transform(text : string) : string
(and few convenient helpers).

Relaxed JSON (modified BSD license) is a strict superset of JSON,
relaxing strictness of vanilla JSON.
Valid, vanilla JSON will not be changed by RJSON.transform. But there are few additional
features helping writing JSON by hand.